Nitrate-Nitrite (Combined) violations in Montana
338 active public water systems in Montana had a Nitrate-Nitrite (Combined) violation in the past three years, 10 of them in the latest quarter of EPA's data. What Nitrate-Nitrite (Combined) is and why it matters.
Systems with a Nitrate-Nitrite (Combined) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wildwood Brewing INC Stevensville · Ravalli County |
32 | 2 | 0 | |
|
Deemer Creek Business Park Plains · Sanders County |
31 | 2 | 1 | |
|
Koocanusa Brewery Eureka · Lincoln County |
31 | 1 | 0 | |
|
Wild Coyote Saloon Thompson Falls · Sanders County |
31 | 2 | 0 | |
|
Beargrass Employee Park Babb · Glacier County |
30 | 2 | 0 | |
|
Chief Mountain Border Station Babb · Glacier County |
30 | 2 | 0 | |
|
Carters Camp Nye Nye · Stillwater County |
29 | 1 | 0 | |
|
Happys Inn Libby · Lincoln County |
29 | 2 | 0 | |
|
Moe's Whistle Stop Libby · Lincoln County |
29 | 2 | 0 | |
|
Middle Fork Motel and TR CT Martin City · Flathead County |
29 | 2 | 0 | |
|
Motel Miles Miles City · Custer County |
29 | 2 | 0 | |
|
Bodhi Farms Bozeman · Gallatin County |
28 | 2 | 0 | |
|
Swan Ridge HOA Kalispell · Flathead County |
28 | 2 | 0 | |
|
The Dewey Bar Divide · Beaverhead County |
28 | 1 | 0 | |
|
Harrys Nite Club Wolf Point · McCone County |
27 | 2 | 0 | |
|
Riverside Inn Glendive Glendive · Dawson County |
27 | 3 | 0 | |
|
Trinity Lutheran Church Camp Kalispell · Flathead County |
27 | 2 | 0 | |
|
The Hideaway Hilger · Fergus County |
26 | 3 | 2 | |
|
B & M Zoo Subdivision Missoula · Missoula County |
25 | 2 | 0 | |
|
Colter CG and Cooke WC Bozeman · Park County |
25 | 2 | 0 | |
|
Cougar Canyon Lodge Monarch · Cascade County |
25 | 3 | 0 | |
|
Crossroads Conoco Glendive · Dawson County |
25 | 2 | 0 | |
|
Elkhorn Trailer Court Ennis · Madison County |
25 | 2 | 0 | |
|
Emigrant Outpost Gardiner · Park County |
25 | 2 | 0 | |
|
Feddes Family Meats Belgrade · Gallatin County |
25 | 3 | 0 | |
|
Goldcreekevents-Whistlestopllc Unapp Gold Creek · Powell County |
25 | 1 | 0 | |
|
JO Bonner CG Magpie Shop Helena · Lewis and Clark County |
25 | 2 | 0 | |
|
June's Bungalow Miles City · Custer County |
25 | 1 | 0 | |
|
Kirby Saloon Busby · Big Horn County |
25 | 3 | 1 | |
|
Lee Metcalf Wildlife Refuge Stevensville · Ravalli County |
25 | 2 | 0 | |
|
Lost Creek State Park Anaconda · Deer Lodge County |
25 | 2 | 0 | |
|
Montana Artesian Water Flathead CO Kalispell · Flathead County |
25 | 3 | 0 | |
|
Montasia Absarokee · Stillwater County |
25 | 2 | 1 | |
|
Rock Creek Lodge Clinton · Missoula County |
25 | 2 | 0 | |
|
Scotsman Bar and Cafe Park City · Stillwater County |
25 | 3 | 0 | |
|
Stillwater Getaway Whitefish · Flathead County |
25 | 3 | 2 | |
|
The Fort at 49 LLC Custer · Yellowstone County |
25 | 3 | 1 | |
|
Waterhole Saloon Reedpoint Reed Point · Stillwater County |
25 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate-Nitrite (Combined), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate-Nitrite (Combined) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Montana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.